Car-heater.



E. J. RAUGH.

GAR HEATER. APPLICATION FILED OUT. 1,1907.

Patented Mar. 2, 1909.

and I do hereby UNTECTEU EDGAR J. RAUGH, OFJTAUNTON, MASSACHUSETTS.

CAR-HEATER.

Ho. emcee.

Specification of Letters'Patent.

Patented March-2, 1909.

Application filed @otober 1, 1907. Serial No..395,44.4.

To all whom it may some it.

Be it known that I, linear: J. RAUon, of Taunton, in the county ofBristol and State oil/lassachusetts, have invented certain new anduseful improvements in Car-Heaters; declare the following to be a full,clear, an exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

The object of this invention is to utilize the heat energy heretoforewasted in the metallic resistance of the motor circuit of an electriccar to heat water which is caused to circulate through pi es within thecar-body fortho purpose of eating the car.

.A further object is to provide means whereby the current may bedirected through resistance coils used for water heating purposes, whendesired, or connected to an ordinary air-cooled resistance when it isnot desired to use the current for heating, that is,

rest claims.

the current may be wholly or in part shunted into either resistance.

The invention will be hereinafter fully set and particularly pointed outin the with porcelain or other non-conducting material, and preferablylocated within a second tank for retaining-the heat. These vesselsareconnected to pipes 2 by flow and return ppes 5, as h nrdinaryhot-water-systems.

ithin each of the vessels 4 are rods 5, covcred with suitablenon-conductors, such as,

poicelain. These rods support motoncircuit controlling mechanism byordinary bindposts.

'-*esistance cells 7, connected to the Wires from While I have shown aseries of tanks, yet a single tank may be em loyed ifdesired.

The motor current icing caused to pass through resistance coils withinthe watercontaining vessels, the heat of the coils is taken off by thewater, which being heated will circulate through pipes 2 and therebyheat the car. But, when it is not desired to I utilize hot water, or thetemperature thereof is to be regulated, the motor current may, in wholeor in part, be shunted by a switch, or switches, as at 8, intoresistance coils 9 which are, as ordinarily, cooled by air circulation.These switches are under the control of the motorman, and the intensityof the heat of the water depends upon the amount of curi'ent directedinto the submerged coil.

The advantages of my invention are apparent. It will be seen that theheat energy now ordinarily lost through the motor-circuit re sistancecoils is utilized in whole or in part, for heating water by whichelectric cars may be heated.

' I do not confine myself to any special arrangement, the inventionbeing capable of being carried out byvarious means.

I claimas my invention:

1.,The combination with an electrically propelled car, of a watercirculating system therein, a rheostat within the car motor circuit, awater containing rece tacle, com rising a part of said system, inc osingsaid 1' costat, a separate air cooled rheostat, and means for connectingeither or both of said rheostats in circuijt with the motor.

2. In combination with an electric car having water pipes, tanksfromwhich said pipes lead, motor-circuit resistance coils located withinsaidtanks, a second set of mot0r-circuit resistance .coils located outsideof said tanks, and means for diverting the motor current into either 01'both sets of coils.

ing witnesses.

Witnesses:

E. H. CAMPBELL, deems M. $wrm'.

